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The current code makes rtas calls for update-nodes, activate-firmware and then update-nodes again. The FW provides the same data for both update-nodes calls. As a result a proc entry exists error is reported for the second update while adding device nodes. This patch makes a single rtas call for update-nodes after activating the FW. It also add rtas_busy delay for the activate-firmware rtas call. Signed-off-by: Haren Myneni <hbabu@us.ibm.com> Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>